om my 16v when you start up you get the wurr for a few seconds from just infront of back drivers side wheel, then it goes off usually, until other day it started making a louder noise constantly and now once i start my car it only runs for a few seconds and then cuts out, what part of the fuel system is this and do i need to replace it,its a round canister bit like the fuel filter. i dont think its my pump as i get to that through my boot, i am a bit low on fuel but i dont think i'm too low!?not really to sure what it is before i go spend £90 on a fuel pump!